<div class="widget_box">
<script type="text/javascript">function check_search_box(){var keyword=$('#search_keyword').val();if(keyword==''){alert('搜索关键词不能为空!');$('#search_keyword').focus();return false;}}</script>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td height="30" bgcolor="#CCCCCC">&nbsp;搜索：</td>
  </tr>
  <form name="search_box" action="<?php echo $this->create_url('search/result'); ?>" method="post" target="_self" onsubmit="return check_search_box();">
  <tr>
    <td height="50">&nbsp;
      <input type="text" name="search_keyword" id="search_keyword" />&nbsp;<input type="submit" name="search_button" id="search_button" value="搜索" /></td>
  </tr>
  </form>
</table>
</div>